龈下残根修复前正畸治疗的临床观察

目的观察龈下残根用正畸快速牵引方法恢复到适当位置后再修复治疗的临床疗效。方法 28颗冠根折的前牙、4颗斜折龈下的前磨牙,经完善的根管治疗后,用纤维桩和光固化树脂制作临时冠。粘贴直丝弓托槽,用直径0.45mm的硬丝弯制成主弓丝,直径0.30mm的镍钛丝作为辅助丝,用固定正畸的方法进行垂直牵引,达到理想位置后修复治疗。结果 32颗牙齿均移动2～4mm,2年复查修复效果理想。结论对有保留价值的龈下残根,采用修复前正畸牵引方法,既可保留残根,又可制作出有良好功能和美观效果的修复体。

The Clinical Observation of Orthodontic Treatment of Subgingival Root Fracture before Restoration

Objective To observe the clinical restoration effect of subgingivally fractured root after rapid orthodontic extrusion to appropriate position.Methods 28 crown-root fractured anterior teeth and 4 subgingivally bevel fractured premolars were selected.Temporary crown was made by fiber post and resin composite after root canal therapy.Straight wire bracket was sticked on temporary crown.All teeth were lifted up to appropriate position by diameter 0.45 mm hard wire as main wire and diameter 0.30 mm nickel titanium wire as auxiliary wire.The teeth were repaired.Results 2-4 mm extrusion was seen in all teeth.The restoration effect was satisfaction after 2 year follow-up.Conclusion The orthodontic treatment for root fracture tooth can not only preserve the root,but also acquire functional and esthetic restoration.